stock horse

noun Western U.S.

a horse or pony used in herding cattle.

Origin of stock horse

First recorded in 1860–65

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for stockhorse

Historical Examples of stockhorse

We took the bits out of their mouths, and let them pick feed round about, with the bridle under their feet, stockhorse fashion.
Robbery Under Arms
Thomas Alexander Browne, AKA Rolf Boldrewood

British Dictionary definitions for stockhorse

stockhorse

noun

Australian a horse trained in the handling of stock

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012